phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './allonssortir/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('015cf42d86db2bd726823010b65ed9c8', -1, 1424996748, 1424996748, '36a36a1f', -12, 0, 0)

Line : 187
File : sessions.php